Re: pg_upgrade and statistics

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Bruce Momjian <bruce(at)momjian(dot)us>
Cc: Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Daniel Farina <daniel(at)heroku(dot)com>, Greg Stark <stark(at)mit(dot)edu>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_upgrade and statistics
Date: 2012-03-14 00:30:17
Message-ID: 18808.1331685017@sss.pgh.pa.us
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Bruce Momjian <bruce(at)momjian(dot)us> writes:
> Another idea is to just copy over pg_statistic like we copy of
> pg_largeobject now, and force autovacuum to run.

That would be an automatic crash in a 9.1 to 9.2 migration, as well as
any other release where we changed the column layout of pg_statistic.

regards, tom lane

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